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Thread: Narrowband O2 weird switching...is it bad?

  1. #1
    Tuner
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    Narrowband O2 weird switching...is it bad?

    Seems my LSJ narrowband O2 sensor is acting funny compared to my truck. At highway speeds it doesnt switch right at all. I will attach a screenshot of this. It only seems to do this at highway speeds.

    o2 switching.jpg

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    From the picture it looks like its going "up and down" like normal to me atleast.

    The front o2 sensor will always go to lean to rich as its trying to achive stoich during normal driving.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
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    Quote Originally Posted by 5FDP View Post
    From the picture it looks like its going "up and down" like normal to me atleast.

    The front o2 sensor will always go to lean to rich as its trying to achive stoich during normal driving.
    What I was pointing out is it is not swinging rich lean for every swing. With a steady stoich it should swing rich lean every swing........mine is not. You can see it swing rich rich rich lean.